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掺气分流墩墩头的动水压强特性研究
Study on characteristics of hydrodynamic pressure on front of aeration-baffles
【摘要】 对掺气分流墩墩头的动水压强特性进行了试验研究 ,以求了解墩头的抗空蚀性能及动水压强特性 .试验结果得出 :时均压强P/Pmax沿墩高和时均压强系数Cp 沿横断面的分布规律 ;墩头轴线与来流有夹角时Cp 沿横断面的分布规律 ;墩头壁压脉动压强特性以及探讨了柘林掺气分流墩 (墩头的θ =75°)的安全使用范围 ;在墩后充分供气时 ,墩头的空化特性 .
【Abstract】 Experimental researches of characteristics of hydrodynamic pressure on the front of aeration_baffle have been done so as to obtain the properties of the aeration-baffle resistant to cavitation. The experimental results show the law of distribution of time average pressure P/P max in the vertical direction and of time average pressure coefficient C p on the cross section of aeration-baffles, and the law of distribution of C p on the cross section when the flowing direction is not parallel to the axis of the aeration-baffle, and the characteristics of fluctuating pressure on the front surface of the aeration-baffle, and the safety employed condition of Zhelin Aeration-baffle; and the characteristics of cavitation of the front of the aeration-baffle when air is completely aerated from the back of the aeration-baffle.
【Key words】 aeration_baffle; front of aeration_baffle; fluctuating pressure; time average pressure; characteristics of cavitation;
- 【文献出处】 武汉大学学报(工学版) ,Journal of Wuhan University of Hydraulic and Electric Engineering , 编辑部邮箱 ,2001年04期
- 【分类号】TV653
- 【下载频次】79